Marked an enemy located at "Top Mid" in a matchmade game.
Revived 3 allies in an Attrition/Elimination round in a matchmade or custom game.
Earned 3 stars in 5 Tier 3 Weapon Drills
Used the Thruster 50 times.
Secured 5 zones in a Strongholds game in a matchmade game.
Drove 4 unique vehicles in a game
Captured the flag twice in a Capture the Flag game in a matchmade game.
Killed an enemy with the Ravager's charged shot in a matchmade game.
Spectated an ally that is driving a Warthog or Razorback in a matchmade game.
Dropped a Power Weapon for an ally in a matchmade game.
Stuck 50 enemies with grenades.
Played a custom game.
Marked 3+ enemies at once in a matchmade game.
Completed a Battle Pass.
Earned "Chain Reaction" with a Shock Rifle in a matchmade game.
"Back Smacked" an enemy who was zoomed in with a scoped weapon in a matchmade game.
Picked up a weapon using the Grappleshot in a matchmade game.
Killed three enemies with the ball in an Oddball game in a matchmade game.
Played a Ranked Match.
Fully upgraded the Thruster ability.
Fully upgraded the Threat Sensor ability.
Fully upgraded the Drop Wall ability.
Checked out the best possible view.
Completed all 14 main missions in under eight hours.
Completed all main campaign missions on Heroic difficulty.
Completed all main campaign missions on Legendary difficulty.
Completed the main campaign.
Completed the main campaign on Normal difficulty.
Answered all UNSC distress calls.
Fully upgraded your Energy Shields.
Fully upgraded the Grappleshot.
Eliminated all 15 Banished High-Value Targets.
Completed all seven Banished outposts.
Captured all available Forward Operating Bases.
Took down all three Banished AA guns in under 20 minutes.
Unlocked the Thruster ability.
Unlocked the Drop Wall ability.
Threw 50 fusion coils.
Accessed your first Spartan Audio Log.
Scanned a Forerunner Artifact.
Discovered your first hidden Skull.
Completed a Banished outpost.
Took out a Banished Propaganda Tower.
Used the Grappleshot to board an enemy Ghost.
Accessed your first Mjolnir Armor Locker.
Splattered an enemy with a Ghost.
Eliminated a Banished High-Value Target.
Answered a UNSC distress call.
Unlocked the Threat Sensor ability.
Accessed your first UNSC Audio Log.
Captured your first Forward Operating Base.
Located and secured a Spartan Core.
Successfully used the Grappleshot 50 times.
Accessed your first Banished Audio Log.
Earned "Splatter" with a Brute Chopper in a matchmade game.
Repelled an enemy grenade with the Repulsor in a matchmade game.
Destroyed an enemy vehicle with the Skewer in a matchmade game.
Completed a Limited Time Challenge.
Killed an enemy with melee using a bladed weapon in a matchmade game.
Changed your Spartan Tag.
Completed one level in a Battle Pass.
Test drove a new vehicle customization.
Wore a new armor customization item.
Earned 2,000 score in a matchmade game.
"Grapplejacked" an enemy flying vehicle in a matchmade game.
Earned a Mythic Medal in a matchmade game.
Earned 3 stars in a Weapon Drill.
Completed a Weapon Drill.
Completed a Weekly Challenge.
Completed a Daily Challenge.
Gained access to a loot cave in a matchmade game.
Tried out a new weapon customization item.
Changed your Spartan's look in the Customize menu.
Got and equip a new AI.
Completed the Tutorial.
Accessed your Personal AI.
Placed an item in the Razorback's storage in a matchmade game.
Assisted in capturing all zones that lead to a score in a Total Control game.
Deposited 5 Power Seeds in a Stockpile game in a matchmade game.
Got at least one kill with every available weapon and grenade on the Banished ship.
Defeated Tremonius with the Skewer.
Destroyed both Phantoms before they left Outpost Tremonius.
Killed the Tower commander with a Plasma grenade.
Killed an enemy with the Banished mining laser.
Completed the Conservatory in less than 15 minutes.
Eliminated all enemies at the South Beacon with a Scorpion Tank.
In the Nexus, killed the Hunter pair with melee final blows.
Killed 40 enemies with the Stalker Rifle at the Command Spire.
Killed one Chieftain and used his turret to kill another in the Repository.
Defeated War Chief Escharum without ever fully losing your shields.
Breached the Auditorium in under three minutes.
In co-op, captured all Forward Operating Bases on any difficulty.
In co-op, completed all seven Banished outposts on any difficulty.
In co-op, answered all UNSC distress calls on any difficulty.
In co-op, eliminated all Banished High-Value Targets on any difficulty.
In co-op, killed 100 enemies while all players are riding air vehicles.
In co-op, splattered 50 enemies while riding in a vehicle with another player.
In co-op, killed 50 enemies while riding a Mongoose with another player.
Killed 5 enemies with a Sniper Rifle from a vehicle. All players aboard vehicle share progress.
Killed 5 enemies with a Gravity Hammer from a vehicle. All players aboard vehicle share progress.
In co-op, killed a Hunter and its bond brother within three seconds of each other.
In co-op, destroyed all cooling towers at the Dig Site within 60 seconds of each other.
In co-op, destroyed four Fuel Silos within five seconds at either Ransom Keep or the Forge of Teash.
In co-op, lowered all three gates within 15 seconds of each other at Riven Gate.
Completed all main missions on Legendary with all Skulls active.
Completed all Valor-awarding activities.
Unlocked all UNSC Audio Logs.
Unlocked all Banished Audio Logs.
Unlocked all Spartan Audio Logs.
Acquired all Spartan Cores.
Accessed all 34 Mjolnir Armor Lockers.
Scanned all seven Forerunner Artifacts.
Discovered all hidden Skulls.
Destroyed 40 Banished Propaganda Towers.
Killed a Grunt that's been thrown by a Brute.
Deployed the Drop Wall 50 times.
Used the Threat Sensor 50 times.
Got the Scorpion all the way to the "House" without it blowing up.
Brought some rescued UNSC Marines along for the ride into a main mission.
Finished Ranked Placement Matches.
Viewed a clip in theater.
Launched into Training Mode for the first time.
Changed any training mode option.
Grabbed a power weapon from the Tutorial armory.
Earned "Perfect" with a VK78 Commando in a matchmade game.
Earned "Mount Up" in a Razorback in a matchmade game.
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